When babies learn to flip from back to tummy (or vice versa), usually between 3 and 6 months. This is a milestone that changes sleep safety rules. Never leave a rolling baby unattended on a bed, couch, or changing table. Once they can roll both ways, they can be left in whatever position they choose for sleep.
Related Terms
The practice of placing infants on their backs for every sleep, including naps. This single change, promoted since the 1990s, cut SIDS rates by more than 50%. Once a baby can roll both ways on their own, you don't need to keep flipping them back.
Never leave a baby unattended on a changing table, not even for a second. Falls from changing tables are one of the most common infant injuries. Always keep one hand on your baby, and have everything you need within reach before you start a diaper change.
A set of practices that reduce the risk of sleep-related infant deaths. The basics: put your baby on their back on a firm, flat surface with no blankets, pillows, bumpers, or toys. Room-sharing without bed-sharing is recommended for at least the first 6 months.